INT 2F - MS Windows95 - VXDLDR - GET API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. ENTRY POINT AX = 1684h BX = 0027h (virtual device ID for VXDLDR device) (see #02642) ES:DI = 0000h:0000h Return: ES:DI -> VxDA virtual device driver for Windows 3.x or 95. So called because nearly all of the Windows 3.0 drivers had names of the form "VdeviceD". See also device driver. API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. entry point (see #02666) 0000h:0000h if the VxDA virtual device driver for Windows 3.x or 95. So called because nearly all of the Windows 3.0 drivers had names of the form "VdeviceD". See also device driver. does not support API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. in current mode SeeAlso: AX=1684h"DEVICE API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes.",INT 20"Windows" (Table 02666) Call VXDLDR entry point with: EAX = function number 0000h get VXDLDR version Return: CF clear AX = 0000h (successful) DH = major version DL = minor version 0001h load device DS(???):DX -> ASCIZA NUL-terminated ASCII string. The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h. Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. path name of dynamically-loadable VxDA virtual device driver for Windows 3.x or 95. So called because nearly all of the Windows 3.0 drivers had names of the form "VdeviceD". See also device driver. (driver must reside in current directory or Windows system directory???) ES:DI = 0000h:0000h Return: CF clear if successful AX = 0000h ES:DI -> VxDA virtual device driver for Windows 3.x or 95. So called because nearly all of the Windows 3.0 drivers had names of the form "VdeviceD". See also device driver. API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. entry point CF set on error AX = error code (see #02667) 0002h unload device EBX = device ID or FFFFFFFFh (Undefined_Device_ID) ---if EBX=FFFFFFFFh --- (DS???):DX -> ASCIZA NUL-terminated ASCII string. The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h. Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. name of dynamically-loadable device (case-sensitive) Return: CF clear if successful AX = 0000h CF set on error AX = error code (see #02667) else Return: CF set AX = 000Bh SeeAlso: #02664,#02668 (Table 02667) Values for VXDLDR error code: 0000h successful 000Bh invalid function number SeeAlso: #02666